MakeMyTrip India — booking filed and amount not refunded

Address:

safco shelters, 560077

I have attempted a flight ticket booking on dec 29, 2019, there were 2 failed transactions were the amount was deducted from my hdfc and sbi for rs.11373. Make my trip has processed refund to my hdfc. However i haven't received refund to my sbi yet. It has been 50 days, make my trip says refund is processed and gave me a reference number arn number. I have gone to the sbi branch but bank has confirmed me that there is refund transaction with that arn number given by make my trip. Make my trip has given me a wrong reference number. No matter how many times i call make my trip, they keep telling me they are still working on the issue. I have shared my bank statement, evidence from sbi mentioning they cant find the transaction with the arn number given by make my trip. Please help me on this incident.